Answer Posted / vamsi

star to star

List examples of current sources?

1122

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Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,

2916

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Explain what is use of lockout relay in ht voltage?

1083

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In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)

11841

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............

1822

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Can I use star delta connected induction motor for dual supply voltage?

1955

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What is stacking factor? What is its approximate value?

1450

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Explain Creepage Distance of Insulator

2220

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What is the percentage loss for aluminium wire for HT line more than 11KVa

2136

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What is order of the system?

1140

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how we calculate torque ? how we improve it ?where torque will either motor or generator ?

2072

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when the time of backcharging the transformer three phases only enough or three phase with neutral is must.from these which one is the best one.

2054

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Differentiate between low pass, high pass and band pass filter?

1080

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what is the difference between earth leakage and earth fault?

2336

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how we calculate electrical load on a building according to area?

2805

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